Integrand size = 69, antiderivative size = 27 \[ \int \frac {-15 x^4+e^x (-5+5 x)+\left (e^x (-1+x)-3 x^4\right ) \log \left (\frac {e^x+80 x-x^4}{5 x}\right )}{2 e^x x+160 x^2-2 x^5} \, dx=\frac {1}{4} \left (5+\log \left (16+\frac {e^x-x^4}{5 x}\right )\right )^2 \]
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Time = 0.21 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.04, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.043, Rules used = {6873, 12, 6818} \[ \int \frac {-15 x^4+e^x (-5+5 x)+\left (e^x (-1+x)-3 x^4\right ) \log \left (\frac {e^x+80 x-x^4}{5 x}\right )}{2 e^x x+160 x^2-2 x^5} \, dx=\frac {1}{4} \left (\log \left (\frac {-x^4+80 x+e^x}{5 x}\right )+5\right )^2 \]
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Rule 12
Rule 6818
Rule 6873
Rubi steps \begin{align*} \text {integral}& = \int \frac {\left (e^x-e^x x+3 x^4\right ) \left (-5-\log \left (\frac {e^x+80 x-x^4}{5 x}\right )\right )}{2 x \left (e^x+80 x-x^4\right )} \, dx \\ & = \frac {1}{2} \int \frac {\left (e^x-e^x x+3 x^4\right ) \left (-5-\log \left (\frac {e^x+80 x-x^4}{5 x}\right )\right )}{x \left (e^x+80 x-x^4\right )} \, dx \\ & = \frac {1}{4} \left (5+\log \left (\frac {e^x+80 x-x^4}{5 x}\right )\right )^2 \\ \end{align*}
Time = 0.08 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.04 \[ \int \frac {-15 x^4+e^x (-5+5 x)+\left (e^x (-1+x)-3 x^4\right ) \log \left (\frac {e^x+80 x-x^4}{5 x}\right )}{2 e^x x+160 x^2-2 x^5} \, dx=\frac {1}{4} \left (5+\log \left (\frac {e^x+80 x-x^4}{5 x}\right )\right )^2 \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 0.83 (sec) , antiderivative size = 496, normalized size of antiderivative = 18.37
method | result | size |
risch | \(\frac {i \pi \ln \left ({\mathrm e}^{x}-x^{4}+80 x \right ) {\operatorname {csgn}\left (\frac {i \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{x}\right )}^{2} \operatorname {csgn}\left (\frac {i}{x}\right )}{4}+\frac {i \ln \left (x \right ) \pi \,\operatorname {csgn}\left (i \left ({\mathrm e}^{x}-x^{4}+80 x \right )\right ) {\operatorname {csgn}\left (\frac {i \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{x}\right )}^{2}}{4}-\frac {i \pi \ln \left ({\mathrm e}^{x}-x^{4}+80 x \right ) \operatorname {csgn}\left (i \left ({\mathrm e}^{x}-x^{4}+80 x \right )\right ) \operatorname {csgn}\left (\frac {i \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{x}\right ) \operatorname {csgn}\left (\frac {i}{x}\right )}{4}+\frac {i \ln \left (x \right ) \pi \,\operatorname {csgn}\left (i \left ({\mathrm e}^{x}-x^{4}+80 x \right )\right ) \operatorname {csgn}\left (\frac {i \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{x}\right ) \operatorname {csgn}\left (\frac {i}{x}\right )}{4}+\frac {i \ln \left (x \right ) \pi {\operatorname {csgn}\left (\frac {i \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{x}\right )}^{3}}{4}-\frac {i \ln \left (x \right ) \pi }{2}+\frac {\ln \left (5\right ) \ln \left (x \right )}{2}-\frac {5 \ln \left (x \right )}{2}+\frac {\ln \left (x \right )^{2}}{4}-\frac {i \pi \ln \left ({\mathrm e}^{x}-x^{4}+80 x \right ) \operatorname {csgn}\left (i \left ({\mathrm e}^{x}-x^{4}+80 x \right )\right ) {\operatorname {csgn}\left (\frac {i \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{x}\right )}^{2}}{4}+\frac {i \pi \ln \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{2}-\frac {i \pi \ln \left ({\mathrm e}^{x}-x^{4}+80 x \right ) {\operatorname {csgn}\left (\frac {i \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{x}\right )}^{3}}{4}-\frac {i \pi \ln \left ({\mathrm e}^{x}-x^{4}+80 x \right ) {\operatorname {csgn}\left (\frac {i \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{x}\right )}^{2}}{2}+\frac {\ln \left (-{\mathrm e}^{x}+x^{4}-80 x \right )^{2}}{4}-\frac {i \ln \left (x \right ) \pi {\operatorname {csgn}\left (\frac {i \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{x}\right )}^{2} \operatorname {csgn}\left (\frac {i}{x}\right )}{4}+\frac {i \ln \left (x \right ) \pi {\operatorname {csgn}\left (\frac {i \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{x}\right )}^{2}}{2}+\frac {5 \ln \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{2}-\frac {\ln \left (x \right ) \ln \left (-{\mathrm e}^{x}+x^{4}-80 x \right )}{2}-\frac {\ln \left (5\right ) \ln \left ({\mathrm e}^{x}-x^{4}+80 x \right )}{2}\) | \(496\) |
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none
Time = 0.28 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.52 \[ \int \frac {-15 x^4+e^x (-5+5 x)+\left (e^x (-1+x)-3 x^4\right ) \log \left (\frac {e^x+80 x-x^4}{5 x}\right )}{2 e^x x+160 x^2-2 x^5} \, dx=\frac {1}{4} \, \log \left (-\frac {x^{4} - 80 \, x - e^{x}}{5 \, x}\right )^{2} + \frac {5}{2} \, \log \left (-\frac {x^{4} - 80 \, x - e^{x}}{5 \, x}\right ) \]
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Leaf count of result is larger than twice the leaf count of optimal. 41 vs. \(2 (20) = 40\).
Time = 0.20 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.52 \[ \int \frac {-15 x^4+e^x (-5+5 x)+\left (e^x (-1+x)-3 x^4\right ) \log \left (\frac {e^x+80 x-x^4}{5 x}\right )}{2 e^x x+160 x^2-2 x^5} \, dx=- \frac {5 \log {\left (x \right )}}{2} + \frac {\log {\left (\frac {- \frac {x^{4}}{5} + 16 x + \frac {e^{x}}{5}}{x} \right )}^{2}}{4} + \frac {5 \log {\left (- x^{4} + 80 x + e^{x} \right )}}{2} \]
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Leaf count of result is larger than twice the leaf count of optimal. 51 vs. \(2 (22) = 44\).
Time = 0.32 (sec) , antiderivative size = 51, normalized size of antiderivative = 1.89 \[ \int \frac {-15 x^4+e^x (-5+5 x)+\left (e^x (-1+x)-3 x^4\right ) \log \left (\frac {e^x+80 x-x^4}{5 x}\right )}{2 e^x x+160 x^2-2 x^5} \, dx=-\frac {1}{2} \, {\left (\log \left (5\right ) + \log \left (x\right ) - 5\right )} \log \left (-x^{4} + 80 \, x + e^{x}\right ) + \frac {1}{4} \, \log \left (-x^{4} + 80 \, x + e^{x}\right )^{2} + \frac {1}{2} \, {\left (\log \left (5\right ) - 5\right )} \log \left (x\right ) + \frac {1}{4} \, \log \left (x\right )^{2} \]
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\[ \int \frac {-15 x^4+e^x (-5+5 x)+\left (e^x (-1+x)-3 x^4\right ) \log \left (\frac {e^x+80 x-x^4}{5 x}\right )}{2 e^x x+160 x^2-2 x^5} \, dx=\int { \frac {15 \, x^{4} - 5 \, {\left (x - 1\right )} e^{x} + {\left (3 \, x^{4} - {\left (x - 1\right )} e^{x}\right )} \log \left (-\frac {x^{4} - 80 \, x - e^{x}}{5 \, x}\right )}{2 \, {\left (x^{5} - 80 \, x^{2} - x e^{x}\right )}} \,d x } \]
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Time = 13.88 (sec) , antiderivative size = 40, normalized size of antiderivative = 1.48 \[ \int \frac {-15 x^4+e^x (-5+5 x)+\left (e^x (-1+x)-3 x^4\right ) \log \left (\frac {e^x+80 x-x^4}{5 x}\right )}{2 e^x x+160 x^2-2 x^5} \, dx=\frac {\ln \left (\frac {16\,x+\frac {{\mathrm {e}}^x}{5}-\frac {x^4}{5}}{x}\right )\,\left (\ln \left (\frac {16\,x+\frac {{\mathrm {e}}^x}{5}-\frac {x^4}{5}}{x}\right )+10\right )}{4} \]
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